<!DOCTYPE html>
<html lang="ch" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<p th:text="${session.hello}">request field value</p>
<form th:action="@{/ui.do}">
    <input type="submit" value="测">
</form>
</body>
</html>